I have 2 ADC 16s and 1 ADC 22 running together to display monitor 40 data channels. When I graph some of these parameters typically about 15 at one time I find if I contract or expand the X axis the Y axis changes its scaling. Why is this?

Also if I stop logging and then restart the ADC 22 will arbitarily re assign the channels to my real value labels. Why?
I await your response.